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Marigold: a machine learning-based web app for zebrafish pose tracking.
BMC Bioinformatics
January 2025
Biology Department, University of Massachusetts Amherst, Amherst, MA, USA.
Background: High-throughput behavioral analysis is important for drug discovery, toxicological studies, and the modeling of neurological disorders such as autism and epilepsy. Zebrafish embryos and larvae are ideal for such applications because they are spawned in large clutches, develop rapidly, feature a relatively simple nervous system, and have orthologs to many human disease genes. However, existing software for video-based behavioral analysis can be incompatible with recordings that contain dynamic backgrounds or foreign objects, lack support for multiwell formats, require expensive hardware, and/or demand considerable programming expertise.
View Article and Find Full Text PDFA comparative analysis of perceptual noise in lateral and depth motion: Evidence from eye tracking.
J Vis
January 2025
Vision and Control of Action (VISCA) Group, Department of Cognition, Development and Psychology of Education, Institut de Neurociències, Universitat de Barcelona, Barcelona, Catalonia, Spain.
The characterization of how precisely we perceive visual speed has traditionally relied on psychophysical judgments in discrimination tasks. Such tasks are often considered laborious and susceptible to biases, particularly without the involvement of highly trained participants. Additionally, thresholds for motion-in-depth perception are frequently reported as higher compared to lateral motion, a discrepancy that contrasts with everyday visuomotor tasks.
View Article and Find Full Text PDFEnsemble reactivations during brief rest drive fast learning of sequences.
Nature
January 2025
Department of Neurology, University of California, San Francisco, San Francisco, CA, USA.
During motor learning, breaks in practice are known to facilitate behavioural optimizations. Although this process has traditionally been studied over long breaks that last hours to days, recent studies in humans have demonstrated that rapid performance gains during early motor sequence learning are most pronounced after very brief breaks lasting seconds to minutes. However, the precise causal neural mechanisms that facilitate performance gains after brief breaks remain poorly understood.
View Article and Find Full Text PDFAtypical development of sequential manual motor planning and visuomotor integration in children with autism at early school-age: A longitudinal kinematic study.
Autism
January 2025
Department of Psychology, Umeå University, Sweden.
Many children with autism struggle with movement difficulties, yet the causes of these difficulties remain unclear. One possible explanation is atypical motor planning and integration of visual and motoric information. Before performing a goal-directed movement, the brain creates a prediction of the movement based on visual and sensory information and previous experience, forming a "blueprint" of the motor steps needed to achieve the goal.
View Article and Find Full Text PDFCognitive functioning in children and adolescents with cerebral palsy: protocol for the Danish CPCog-Youth study.
BMC Pediatr
December 2024
Department of Paediatrics and Adolescent Medicine, University Hospital Rigshospitalet, Copenhagen, Denmark.
Background: Many children and adolescents with cerebral palsy (CP) experience cognitive difficulties, impacting their academic, social, and emotional well-being. A Danish study from 2023 revealed that merely 40% of individuals with CP complete their elementary school education, and previous neuropsychological studies have found that most children and adolescents with CP experience cognitive difficulties. Yet, cognitive functioning is often assumed rather than assessed, and CP follow-up programs focus predominantly on physical functioning.
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